Paper-crinkling machine



Aug. 4, 1925. I 3,548,789

\N.A.LORENZ 1 PAPER CRINKLING MACHINE Filed May 18, 1921 2 Sheets-Sheet l Aug. 4-, 1925. 1,548,789

w A. LORENZ PAPER CRINKLING MACHINE] Filed May 18, 1921 2 Sheets-Sheet 2 Patented Aug. 4, 1925.

UNITED STATES WILLIAM a.

comment,

PATENT OFFICE.

I LORENZ, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE OTAKA FABRIC OF HARTFORD, CONNECTICUT, A CORPORATION CONNECTICUT.

PAPER-CRINKLING MACHINE.

Application filed May 18, 1921. Serial No. 470,513.

To all whom it may concern Be it known that I, WILLIAM A. LORENZ, a citizen of the United States, residing in Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Paper- Crinkling Machines, of which the following is a specification.

This invention relates to crinkling or crping either plain or corrugated paper or paper stock.

According to the usual practice, a Web of moistened paper is led over a cylinder, to which it is caused to adhere by reason of its moist condition. The cylinder usually drives the paper against a doctor-blade, which performs two functions, namely, it crinkles the paper transversely and simultaneously strips it from the cylinder; The paper usually adheres tightly to the cylinder, in order to enable the latter to crush it with sufiicient force against the doctor-blade,

and also to prevent the doctor-blade from stripping the paper fronithe cylinder prematurely, that is, before the paper advances to the crushing point.

Premature stripping of the paper is found to be a serious objection, especially where heavy paper is used, becauee, if the paper is partly or wholly stripped from the cylinder before it reaches the doctor-blade, the crushing or crinkling operation is weakened, since the strip of paper is not driven with the required force against the doctor-blade or abutment. Moreover, it is objectionable.

to moisten the paper so thoroughly as usual- 1 required, inasmuch as itzis expensive to ii-y it, and the drying ovens occupy considerable room, while the product is apt to be of an inferior quality when the paper isheavily moistened.

One of the objects of the invention is to overcome these difliculties, and the'object is attained by substituting for the doctor- 'blade an apparatus which forms a constricted throat into which the paper advances, the throat bein choked by the paper, thus obstructing t e progress of the paper freshly entering the throat, whereby the advancing paper becomes transversely crinkled or creped in forcing a passage throu h the throat. One element forming the t roat is preferably a roll, which is preferably power-driven,-being geared to the main cylinder; while the other element forming the throat is preferably a plate whlch curves around said roll for some distance, forming the required narrow crevice or throat. One edge of said plate may be in contact with the c linder, and it may be sharpened and strip t e paper from the cylinder, and guide it into the throat, preparatory to becoming crinkled therein. The delivery end of the throat is more constricted than the intake end thereof, said constriction being of service in retarding and hence effecting the crinkling. of the paper.

In carrying out the invention in another form, the main cylinder may be peripherally grooved and the paper or paper stock may be longitudinally corrugated by the co-operation of said cylinder with a companion grooved roll. The fluted throat into which the paper is delivered by the cylinder comprises a ooved roll and a throat plate which is so grooved, so'that the paper may enter the throat in a corrugated condition, and, after being therein crinkled, emerges in a longitudinally corrugated and transversely crinkled condition.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a plan, and Figure 2 is a sectional side elevatlon of one form of crinkling machine for carrying out the present improvements.

Figure 3 is an enlarged sectional eleva tion of the parts composing thecrinkling throat seen at Figure 2.

Figure 4 is a plan, and Figure 5 is an elevation, of a machine for both corrugating and crinklingpaper according to the present improvements.

, Figure 6 is an enlarged sectional elevation, showing details of the throat and the improving-means for adjusting the extent of the opening at the constricted delivery end of the throat.

The web of paper is shown in the form of a roll 10. The unfinished product of a paper-making machine may be used in carrying out. the present im rovements in either form. The rotation o the roll 10 is retarded by aweighted strap 11. The web is led over a guide-roll12 and onto a main cylinder 13, and passes down around the same into a tank 14 containing water 15,

whereby the web may be moistened. As the paper emerges from the tank, it is pressed by a regulatable soft rubber roll 16 against the cylinder 13, thereby squeezing out surplus water and also causing the moistened web to adhere to the surface of the cylinder with sufficient tightness tube of service in crushing the paper to form transverse wrinkles therein.

The paper is stripped from the cylinder by means of the sharpened edge 17 of a plate 18, and is conducted up between said plate and a roll 19. The latter preferably runs upon the cylinder, and is power-driven by meansof a pinion 20 upon shaft 21 of the roll, said pinion meshing with a gear 22 on shaft 23 of the main cylinder, 13. The roll 19 therefore may revolve at the same surface speed as the main cylinder 13, and is of service in aiding to force the paper through the throat after it is stripped from said cylinder. Said plate 18 curves around the roll 19 preferably for about a uarter of its circumference, and forms t erewith a constricted throat to constitute a crinkling passage for the paper. The curvature of the a plate or segment 18 is nearlv concentric with the roll, and is preferably closer to the roll at the delivery end of the throat. buch con striction may be relied upon to cause the paper to choke in the throat, whereby-the paper advancing from the main cylinder 13 is crushed or formed into wrinkles, beginning referably at abouta-,point 24, Figure 3, a s ort distance from the cylinder. The crinkled paper slowly emerges from the throat, and is carried off by a delivery belt 25. 1

In starting the machine, the leading edge of the web may be crinkled up by hand and introduced intothe throat, through which iticarinotreadily pass because of its crinkled condition, and therefore the throat becomes choked at its delivery end, and the oncoming pap'er itself also becomes crinkled in forcing the leading end of the web out of the constricted end of the throat. The portion of the web thus crinkled becomes in turn an obstruction in the'delivery end ofthe. throat, thus. causing fresh oncoming portions to become crinkled, and so 011.

The plate and roll may be so close as to secure efiicient crinklin but if a still liar-- rower crevice 1s desire at the delivery end of the throat, there may be employed a plate paper-advancing means, of 00-0 erative de-.

' 30, to which the stripper plate 18 is secured I by screws 31.

Upon the ends of the plate 18 may be cast 1 or provided arms 32, these arms being pivote upon the axle 21 of the roll, so as to plate 18 against the cylinder 13, to render it efiicient in stripping the'paper from the cylinder.

Referring more particularly to Figures 4, 5, and 6, the web may be longitudinally corrugated as well as transversely crinkled. The main cylinder 34 may be peripherally grooved at 35, andvtwo grooved rolls 36, 37, may press the paper into the grooves of the cylinder 34, to corrugate the paper. The original web 38 may be dampened, or the dry paper may be moistened by means of a Sprinkler-pipe 39, Figure 5, as well as by the water in the tank 14. The crinkling roll 40 is peripherally groovedat 41 to match the grooves in the cylinder 34; and the curved stationary throat-plate that co-operates with roll may be correspondingly grooved as at 42 on its concave side. the curved plate and roll taken to ether form a wavy or fluted passage or t roat for the corrugated paper. This passage is narrowerv or obstructed at or towards its delivery end, so that the corrugated paper forced throu h said passage becomes crinkled transverse y because of such narrowing, the corrugated and crinkled product being seen at 43. The grooved curved throat-plate is"designated as 44 and may be provided with ears 45 whereby it is fixedly supported on opposite brackets 46-provided upon the framework of the machine. The remainder of the curved plate 'is designated as 47, and is hinged at 48 to kli-ng of the paper.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be without others.

I-I Iaving thus described my invention, I 0 aim:

1. The combination with power-driven paper, and means in advance of said throat.

to press the surplus moisture out of the paper and cause. it to adhere to the cylinder.

2. The combination with power-driven paper-advancing means, of co-operative devices forming a throat into which thepaper is advanced, one of said co-operativedevices being a roll and the other being a stationary plate, said plate being of segmental form and curving around said roll closethereto to form a narrow crevice or throat between the plate and the roll to cause the paper advancing thereinto to become crinkled in forcing a passage, said advancing means in the form of a cylinder, and said plate hav ing a stripping edge to contact with the cylinder, said roll connected to said cylinder to rotate at the same surface speed, one edge of said curved plate in contact with the cylinder, to serve to strip the paper from the c linder and guide it into the throat.

3. The combination with power-driven paper-advancing means, of co-operative devices forming a throat into which the paper is advanced, one of said co-o erative devices being a roll and the other being a stationary plate, means being provided at the delivery end of the throat to restrict the passage for the paper to cause the pa er advancing theremto to become crinkle in forcing a passage.

4. The combination with a main 0 linder and means for moistening a web, 0 a roll to press surplus moisture from the web andcause the web to adhere to the cylinder, a plate having a sharpened edge to strip the paper from the cylinder, and a roll eared to said cylinder to run thereon, sai late extending around said roll to form t ere with a throat to receive the paper stripped from said cylinder, said throat constricted to obstruct the passage of the paper through the throat, whereby the incoming paper is transversely crinkled against the obstruction.

5. The combination with a main cylinder and means for moistening a web, of a roll to press surplus moisture from the web and cause the web to adhere to the cylinder, a

plate having a sharpened edge to strip the paperfrom thecylinder, and a roll geared to said cylinder to run thereon, said plate extending around said roll to form therewith a throat to receive the paper stripped from said cylinder, said throat constricted to obstruct the passage of the paper through the throat, whereby the incoming paper is transversely crinkled against the obstruction, said plate being in the form of a segment which is nearly concentric with said roll and approaches nearest to the roll at the delivery endof the throat.

6. The combination with power-driven paper-advancing means, of co-o erative devices forming'a throat into whic the paper is advanced, one of said co-operative devices forcing a passage.

8. The combination wit-h power-driven paper-advancing means, of co-operative devices forming a throat into which the paper is advanced, one of said co-operat-ive devices being a roll and the other being a stationary plate, a plate or gate being employed for partially closing the delivery end of the throat, to cause the paper advancing thereinto to become crinkled in forcing a passage.

9. The combination with power-driven paper-advancing means, of co-operative devices forming a throat into which the paper is advanced, one of said co-operative devices being a roll and the other being a stationary plate, a plate or gate being employed, for partially closing the delivery end of the throat, to cause the paper advancing thereinto to become crinkled in forcing a passage. said gate having a rounded edge to avoid tearing the paper while obstructing its progress. I

10. The combination with power-driven paper-advancing means. of co-operative dcvlces forming a throat into which the paper is advanced, one of said 'co-operative devices being a roll and the other being a stationary plate, said plate being of segmental form and curving around said roll close thereto to form a narrow crevice or throat between the plate and the roll to cause the paper advancing thereinto to become crinkled in forcing a passage, said advancing means in the form of a cylinder, and said plate having a strippin edge to contact with the cylinder, said roll connected to said cylinder to rotate at the same surface speed, and arms upon which said plate is carried, said arms pivoted about concentrically of said roll to permit a swinging adjustment of said plate.

11. The combination with power-driven paper-advancing means, of co-operativc devices forming a throat into which the paper is advanced, one of said co-o erative devices being a roll and the other being a stationary plate, said plate being of segmental form and curving around said roll close thereto to form a narrow crevice or throat between the plate and the roll to cause the paper advancing thereinto to become crinkled in forcing'a passage, said advancing means in the form of a cylinder, and said plate hav lit!) between the plate and the roll to cause the mg a stripping edge to iontact with the cylinder, said roll connected to 'said cylinder to rotate at the same surface speed, arms upon which said plate is carried, said arms pivoted about concentrically of said roll to permit a swingirig adjustment of said plate, and means for pressing the stripping edge of said plate against the cylinder.

12. The combination with power-driven paper-advancingmeans, of co-operative devices forming a throat into which the paper is advanced, one of said co-operative devices being a roll and the other being a stationary plate, said plate being of segmental form and curving around said roll close thereto to form a narrow crevice or throat between the plate and the roll to cause the paper ad oted about concentrically of said roll to permit a swinging adjustment of said plate,

means for pressing the stripping edge of said plate against the cylinder, and a crinkling plate or gate placed at the delivery portion of the throat.

13. The combination with power-driven paper-advancing means, of co-operative de;

vices forming a throat into which the paper is advanced, one of said co-operativedevices being a roll and the other being a stationary plate, said plate being of segmental form and curving around said roll close thereto to form a narrow crevice or throat paper advancing thereinto to become crinkled in forcing a passage,sa id advancing means in the form of a cylinder, said plate having a stripping, edge, to contact with the cylinder, said rolllconnected to said cylinder to rotateat the same surface speed, said curved plate provided with an adjustment for varying the capacity of thethroat at its delivery end.

14. The comb'nation with power-driven paper-advancing means, of co-operative devices forming a throat into which the paper is advanced, one of said co-operative devices being a roll and theother being a stationary plate, said plate being of segmental form and curving around said roll close thereto to form a narrow crevice or throat between the plate and the roll to cause the paper advancing thereinto to become crinkled in forcing a passage, said advancing means in the form of a cylinder, said plate havin a stri ping edge to contact wit the cylin er, sai roll connected to said cylinder to rotate at the same surface speed, said plate forming two portions, one hin ed to the other, the stripper portion of sai plate being stationary and the delivery portion of said plate being adjustable for varying the ca' crinkled by said device.

16. The combination with a power-driven. cylinder and means to cause the paper, to cling to the cylinder, of a curved plate forming a stripper to strip the paper' from the cylinder, a spring to press said plate against the cylinder, and means co-o said plate to form a throat paper is transversely crinkled.

17. The combination with a power-driven cylinder, of co-operative members forming a. throat into which the paper is thrust by thecylinder, one of said members being station-' ary, and means for closing the'aperture' at thedelivery end of the throat in order to hold back the paper for the purpose of causingthe same to crinkle itself.

"18. The combination with power-driven paper-advancing means, of co-operative devices forminga fluted throat into which paper is advanced, one of said co-operative dcvices'being a grooved roll and the other being a stationary grooved plate, and said throat constricted to cause the paper advancing thereinto to become crinkled in forcing 'itsassage through the throat.

19'. T e combination with power-driven paper-advancing means, of c'o-operative devices forming a fluted throat into which paper is advanced, one of said co-operative devices being a grooved roll and the other being a stationary grooved plate, said throat constricted to cause the paper advancing thereinto to become crinkled in forcing its passage through the throat, said advancing means in the form of a peripherally grooved cylinder, and said plate having a serrated stripping ed e to contact with the grooves and ridges o the cylinder.

20. The combination with power-driven paper-advancing means, of co-operative devices forming a fluted throat into which paper is advanced, one of said co-operative devices being a grooved roll and the other ping edge to contact wit the grooves and ridges of the cylinder, means to moistenthe paper, and means in advance of said rating with. y which the stripthroat to press the surplus moisture out of the paper and press it into the grooves and cause it to adhere to the cylinder.

21. The combination with power-driven paper-advancing means, of co-operative devices forming a fluted throat into which paper is advanced, one of said co-operative devices being a grooved roll and the other being a stationary grooved plate, said throat constricted to cause the paper advancing thereinto to become crinkled in forcing its passage through the throat, said advancing means in the form of a peripherally grooved cylinder, and said plate having a serrated stripping edge to contact with the grooves and ridges of the cylinder, said plate; of segmental form and curving a ound said roll to form a narrow crevice or throat between the plate and the roll.

22. The combination with power-driven paper-advancing means, of co-operative devices forming a fluted throat into which paper is advanced, one of said co-operative devices being a grooved roll and the other being a stationary grooved plate, said throat constricted to cause the paper advancing thereinto to become crinkled in forcing its passage through the throat, said advancing means in the form of a peripherally grooved cylinder, and said plate having a serrated stripping edge to contact with the grooves and ridges of the cylinder, said plate of segmental'form and curving around said roll to form a narrow crevice or throat between the plate and the roll, means being provided for varying the constriction of the throat.

23. The combination witha grooved main cylinder and means for moistening a web, of a grooved roll to force the web into the grooves of the cylinder and press surplus moisture from the web and to cause the web to adhere to the cylinder, a grooved plate having a sharpened serrated edge to enter the grooves of the cylinder and strip the paper from the cylinder, and a grooved roll geared to said cylinder, said grooved plate extending around said roll to form therewith a fluted throat to receive the paper stripped from said cylinder, said throat having a constriction to obstruct the passage of the paper, whereby the incoming paper is transversely crinkled.

24. The process of crinkling a paper web, consisting in moistening the web, pressing the moist paper against a grooved carrier, to corrugate the web, stripping the web from the carrier, and conducting it into a grooved or fluted throat, one side whereof tends to advance the web and the other side whereof tends to hold back the web, causing the paper to choke the throat and crinkle itself in forcing a passage.

25. The combination with a grooved main cylinder and means for moistening web, of a grooved roll to force the web into the grooves of the cylinder and press surplus moisture from the web and to cause the web to adhere to the cylinder, a grooved plate having a sharpened serrated edge to enter the grooves of the cylinder and strip the paper from the cylinder, and a grooved roll geared to said cylinder, said grooved olate extending around said roll to form t erewith a fluted throat to receive the paper stripped from said cylinder, said throat having a constriction to obstruct the passage of the paper, whereby the incoming paper is transversely crinkled, said plate provided with an adjustment for varying the capacity of the throat at its delivery end.

26. The combination with a grooved main cylinder and means for moistening a web, of a grooved roll to force the web into the grooves of the cylinder and press surplus moisture from the web and to cause the web to adhere to the cylinder, at grooved plate having a sharpened serrated ed e to enter the grooves of the cylinder an strip the paper from the cylinder, and a grooved roll geared. to said cylinder, said grooved late extending around said roll to form t erewith a fluted throat to receive the paper stripped from said cylinder, said throat having a constriction to obstruct the passage of the paper, whereby the incoming paper is transversely crinkled, said plate forming two portions, one hinged to the other, thestripper portion of said plate being stationary and the delivery portion of said plate being adjustable for varying the capacity of the throat, thereby to regulate the crinklin'g.

2-7. In combination, a crinkling device comprising a curved grooved plate and a power-driven grooved roll for carrying the paper along said curved plate, said plate being placed so. closely to said roll that the paper is obstructed between the plate and the roll and thereby cross-crinkled.

28. In combination, a crinkling device comprising a curved grooved plate and a power-driven grooved roll for carrying the paper a-lon said curved plate, said plate being place so closely to said roll that the paper is obstructed between the plate and the roll and thereby cross-crinkled, and means for wetting the paper to prepare it I for being crinkled by said device.

29. The combination with a power-driven grooved cylinder and grooved means to cause the paper to cling to the cylinder, of a curved grooved plate having a serrated edge forming a stripper .to strip the paper from the cylinder, a spring to ress said plate against the' cylinder, an grooved means co-operating with said plate to form a throat by which the paper is transversely crinkled.

30. The combination with a power-driven grooved cylinder, of co-operative grooved matched members forming a fluted throat into which the paper is thrust by the cylinthat the paper is crinkled in forcing a passage.

31. The combination with a power-driven grooved cylinder, of co-operative grooved matched members forming a fluted throat into which the paper is thrust by the cylinder, one of said members being stationary,

and said throat being of such small capacity that the paper is crinkled in forcin a passage, one of said members being in tie form of a stripper having a serrated edge to separate the paper from the cylinder and guide it into the throat.

WILLIAM A. LORENZ.

Witnesses:

LILLIAN M. Tanon, D. MAUDE SMITH. 

